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Test on Atomic Structure-2

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Question 1

In H–atom electron jumps from 3rd to 2nd energy level, the energy released is-

Question 2

If the radius of first Bohr orbit be a₀, then the radius of the third orbit would be -

Question 3

In two H atoms X and Y the electrons move around the nucleus in circular orbits of radius r and 4r respectively. The ratio of the time taken by them to complete one revolution is-

Question 4

The longest wavelength of absorption line for hydrogen gas containing atoms in ground state is

Question 5

The velocity of an electron in Bohr’s first orbit of hydrogen atom is
(Given r = 0.53 × 10^–10 m)

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May 15JEE & BITSAT